JP2019198972A - Decorative sheet - Google Patents
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- JP2019198972A JP2019198972A JP2018092982A JP2018092982A JP2019198972A JP 2019198972 A JP2019198972 A JP 2019198972A JP 2018092982 A JP2018092982 A JP 2018092982A JP 2018092982 A JP2018092982 A JP 2018092982A JP 2019198972 A JP2019198972 A JP 2019198972A
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Abstract
Description
本発明は、化粧板に関する。 The present invention relates to a decorative board.
板状の基材に化粧シートが貼り合された化粧板は、床材、扉、造作部材、天板等の内装建築材に広く利用されている。前記化粧板は、板状の木質基材の表面および側面部に化粧シートが貼り合されていることが一般的である（例えば、特許文献１を参照。）。しかしながら、近年では、意匠性の向上を目的に、化粧板に溝をつけて、複数の化粧板を貼り合わせたような構成とする化粧板が求められている。 A decorative board in which a decorative sheet is bonded to a plate-like base material is widely used for interior building materials such as a flooring material, a door, a construction member, and a top board. As for the said decorative board, it is common that the decorative sheet is bonded by the surface and side part of a plate-shaped wooden base material (for example, refer patent document 1). However, in recent years, there has been a demand for a decorative board having a configuration in which a groove is formed in a decorative board and a plurality of decorative boards are bonded together for the purpose of improving design properties.
前記溝のついた化粧板を製造する方法としては、例えば、板状の基材に化粧シートをラミネートしたのちに、シートごと溝を彫る方法や、あらかじめ溝の入った基材に真空ラミネート法により化粧シートを溝形状に追従させながらラミネートする方法が利用されている。 As a method for manufacturing the grooved decorative plate, for example, after laminating a decorative sheet on a plate-like substrate, a method of carving the groove with the sheet, or a vacuum laminating method on a previously grooved substrate A method of laminating a decorative sheet while following the groove shape is used.
しかしながら、前者の方法では、溝を彫った部分において基材が露出するため耐水性に劣り、後者の方法では、例えば木目調の化粧シート等を使用した場合には、木目模様が広がってしまうなど、意図する意匠性を施すのが非常に困難であるとの問題や、バッチ式となるため生産性も極めて悪いとの問題もあった。 However, the former method is inferior in water resistance because the base material is exposed at the grooved portion, and the latter method spreads the wood grain pattern when, for example, a wood-tone decorative sheet is used. However, there were problems that it was very difficult to give the intended design, and that the productivity was extremely poor because of the batch type.
本発明が解決しようとする課題は、耐水性、及び、意匠性に優れる化粧板を提供することである。 The problem to be solved by the present invention is to provide a decorative board excellent in water resistance and design.
本発明は、基材、及び、化粧シートが貼り合わされた化粧板であって、前記基材が、その表面部に、長手方向および長手方向以外の少なくとも１方向に溝を有するものであり、基材の側面部、表面部および表面部に設けられた溝部において化粧シートが連続して貼り合わされており、前記表面部に設けられた溝部に貼り合された化粧シートの伸び率が５％以上であり、かつ、側面部の化粧シートの伸び率が５％未満であることを特徴とする化粧板を提供するものである。 The present invention is a decorative board on which a base material and a decorative sheet are bonded, wherein the base material has grooves in at least one direction other than the longitudinal direction and the longitudinal direction on the surface portion thereof. The decorative sheet is continuously bonded to the side surface portion, the surface portion, and the groove portion provided on the surface portion of the material, and the elongation percentage of the decorative sheet bonded to the groove portion provided on the surface portion is 5% or more. In addition, the present invention provides a decorative board characterized in that the elongation percentage of the decorative sheet on the side surface portion is less than 5%.
本発明の化粧板は、平面部に化粧シートが追従した溝を有するため、耐水性に優れるものである。また、基材平面部の化粧シートの伸び率を低く設定することができ、例えば、木目調の化粧シート等を使用した場合には、平面部では木目模様が広がらず、所望の意匠性を簡便に得ることができる。 Since the decorative board of the present invention has a groove that the decorative sheet follows in the flat portion, it is excellent in water resistance. Further, the elongation rate of the decorative sheet on the flat surface of the base material can be set low. For example, when a decorative sheet having a wood grain tone is used, the wood pattern is not widened on the flat surface, and the desired design can be simplified. Can get to.
よって、本発明の化粧板は、床材；下足扉、クローゼット扉、キッチン扉等の扉；枠材、額縁、巾木等の造作材；カウンターテーブル、家具用天板等の天板などに好適に使用することができる。 Therefore, the decorative board of the present invention can be used for flooring materials; doors such as underfoot doors, closet doors and kitchen doors; construction materials such as frame materials, picture frames and baseboards; It can be preferably used.
本発明の化粧板は、基材、及び、化粧シートが貼り合わされたものである。 The decorative board of the present invention is obtained by bonding a base material and a decorative sheet.
前記基材としては、例えば、板状の木材、集成材、合板、ＭＤＦ（ミディアム・デンシティ・ファイバーボード）、パーチクルボード等の木質基材；硬質セメント珪酸カルシウム板等の無機質基材などを用いることができる。 Examples of the base material include wood base materials such as plate-like wood, laminated wood, plywood, MDF (medium density fiber board), and particle board; inorganic base materials such as hard cement calcium silicate boards. it can.
前記基材の厚さ、幅、および、長さは、それぞれ化粧板の使用される用途に応じて適宜決定されるが、例えば、縦が６００〜４０００ｍｍ、横が５０〜４５０ｍｍ、厚さが２〜１８ｍｍの範囲が挙げられる。 The thickness, width, and length of the base material are appropriately determined according to the application for which the decorative board is used. For example, the length is 600 to 4000 mm, the width is 50 to 450 mm, and the thickness is 2. A range of ˜18 mm is mentioned.
前記基材は、長手方向（幅が長い方向を示す。幅が縦横同じである場合にはどちらか一方を示す。）、及び、長手方向以外の少なくとも１方向に溝を有するものである。長手方向の溝は１つであっても２つ以上であってもよく、また、長手方向以外の溝も１つであっても２つ以上であってもよい。前記長手方向以外の溝の方向としては、最も利用頻度が高い点、及び、ライン生産上溝部に化粧シートを追従させやすい点から、長手方向に対して垂直であることが好ましい。 The base material has grooves in at least one direction other than the longitudinal direction (showing a long width direction. When the width is the same in both the vertical and horizontal directions) and the longitudinal direction. The number of longitudinal grooves may be one or two or more, and the number of grooves other than the longitudinal direction may be one or two or more. The direction of the grooves other than the longitudinal direction is preferably perpendicular to the longitudinal direction from the point of highest use frequency and the point that the decorative sheet can easily follow the groove part in line production.
前記基材が有する溝としては、円筒溝、三角溝、平面溝等、アリ溝等が挙げられる。これらの溝は１種でも２種以上が混在していてもよい。これらの中でも、床材等での利用頻度が高く、化粧シートの溝部への追従性が良好なことから、三角溝が好ましい。 Examples of the groove of the substrate include a cylindrical groove, a triangular groove, a flat groove, and an ant groove. These grooves may be one kind or a mixture of two or more kinds. Among these, triangular grooves are preferable because they are frequently used in flooring and have good followability to the groove of the decorative sheet.
前記溝の深さは、化粧板の使用される用途に応じて適宜決定されるが、例えば、０．５〜３ｍｍの範囲が挙げられる。また、溝の幅としては、例えば、０．５〜３ｍｍの範囲が挙げられる。 Although the depth of the said groove | channel is suitably determined according to the use for which a decorative board is used, the range of 0.5-3 mm is mentioned, for example. Moreover, as a width | variety of a groove | channel, the range of 0.5-3 mm is mentioned, for example.
本発明で用いることができる化粧シートは、無地であっても、装飾的な色や模様が施されているものであってもよい。また、前記化粧シートの材質としては、例えば、ポリ塩化ビニル、ポリオレフィン、ポリエステル、ポリアミド、ポリスチレン、ポリカーボネート、エチレン−酢酸ビニル共重合体、ポリビニルアルコール、ポリエチレン、ポリプロピレン等の樹脂；化粧紙、不織布、織布、木質薄化粧突き板、畳表等が挙げられる。 The decorative sheet that can be used in the present invention may be plain or may have a decorative color or pattern. Examples of the material of the decorative sheet include resins such as polyvinyl chloride, polyolefin, polyester, polyamide, polystyrene, polycarbonate, ethylene-vinyl acetate copolymer, polyvinyl alcohol, polyethylene, and polypropylene; Examples include cloth, thin wood veneer, and tatami mat.
前記化粧シートの厚さとしては、溝部への追従性に優れ、より一層優れた耐水性が得られる点、化粧シートを軟化して所望の伸び率に設定しやすく溝部への化粧シートの追従性を向上できる点から、０．０５〜０．３ｍｍの範囲が好ましく、０．１〜０．２ｍｍの範囲がより好ましい。 As the thickness of the decorative sheet, the followability to the groove is excellent, and further excellent water resistance can be obtained, and the decorative sheet can be easily set to a desired elongation by softening the decorative sheet. From the point which can improve this, the range of 0.05-0.3 mm is preferable, and the range of 0.1-0.2 mm is more preferable.
前記化粧シートの軟化点としては、溝への追従性に優れ、より優れた耐水性が得られる点、および、化粧シートを軟化して所望の伸び率に設定しやすい点から、４０〜１５０℃の範囲であることが好ましく、５０〜８０℃の範囲がより好ましい。なお、前記化粧シートの軟化点は、ＪＩＳＫ７２０６：２０１６のＡ５０法に準拠して測定した値を示す。 As the softening point of the decorative sheet, 40 to 150 ° C. from the point that it is excellent in followability to the groove and better water resistance is obtained, and the decorative sheet is softened and easily set to a desired elongation. It is preferable that it is the range of 50-80 degreeC. In addition, the softening point of the said decorative sheet shows the value measured based on A50 method of JISK7206: 2016.
前記基材と化粧シートとの貼り合わせには、例えば、接着剤を使用することが好ましい。前記接着剤としては、例えば、湿気硬化型ウレタンホットメルト接着剤、ＥＶＡ（エチレン−酢酸ビニル共重合体）接着剤、エマルジョン型ホットメルト接着剤、低温塗布型ホットメルト接着剤、耐溶剤ホットメルト接着剤等のホットメルト接着剤；ウレタン（メタ）アクリレート、エポキシ（メタ）アクリレート、アクリル（メタ）アクリレート等を含有する紫外線硬化型接着剤；一液型エポキシ樹脂；二液型エポキシ樹脂、二液型ウレタン樹脂等の二液硬化型接着剤などを用いることができる。これらの接着剤は単独で用いても２種以上を併用してもよい。これらの中でも、無溶剤であり、一回の塗布で十分な接着強度を付与できる点から、ホットメルト接着剤を用いることが好ましく、優れた初期接着強度により生産時のラインスピードを一層向上できる点から、湿気硬化型ウレタンホットメルト接着剤を用いることがより好ましい。 For bonding the base material and the decorative sheet, for example, an adhesive is preferably used. Examples of the adhesive include a moisture curable urethane hot melt adhesive, EVA (ethylene-vinyl acetate copolymer) adhesive, an emulsion hot melt adhesive, a low temperature application hot melt adhesive, and a solvent resistant hot melt adhesive. Hot-melt adhesives such as adhesives; UV curable adhesives containing urethane (meth) acrylate, epoxy (meth) acrylate, acrylic (meth) acrylate, etc .; one-part epoxy resin; two-part epoxy resin, two-part type A two-component curable adhesive such as urethane resin can be used. These adhesives may be used alone or in combination of two or more. Among these, since it is solventless and can give sufficient adhesive strength by a single application, it is preferable to use a hot melt adhesive, and the line speed during production can be further improved by excellent initial adhesive strength. Therefore, it is more preferable to use a moisture curable urethane hot melt adhesive.
前記接着剤層としては、十分な接着性が得られればよく適宜決定できるが、例えば、０．０３〜０．１５ｍｍの範囲が挙げられる。 The adhesive layer may be appropriately determined as long as sufficient adhesiveness is obtained. Examples thereof include a range of 0.03 to 0.15 mm.
本発明の化粧板は、前記基材、及び、化粧シートが貼り合されたものであり、基材の側面部、平面部および平面部に設けられた溝部において化粧シートが連続して貼り合わされてものである。これにより化粧板に優れた耐水性を付与することができる。 The decorative board of the present invention is obtained by bonding the base material and the decorative sheet, and the decorative sheet is continuously bonded in the side surface portion, the flat surface portion, and the groove portion provided in the flat surface portion of the base material. Is. Thereby, the water resistance which was excellent in the decorative board can be provided.
また、本発明の化粧板において、前記溝部に貼り合された化粧シートの伸び率は５％以上であり、側面部に貼り合された化粧シートの伸び率は５％未満であることが必須である。また、前記平面部に貼り合された化粧シートの伸び率も５％未満であることが好ましい。本発明においては、化粧板を製造する際に、真空ラミネート法を使用しないため、側面部、及び、好ましくは平面部における化粧シートは５％以上に伸びることがない。このように基材側面部及び好ましくは平面部の化粧シートの伸び率が低いため、化粧シートの意匠性を損なうものでなく、溝部においても所望の意匠を簡便に施すことができる。前記基材の溝部に貼り合された化粧シートの伸び率としては、より一層化粧シートの追従性が向上できる点から、５〜２００％の範囲が好ましく、５０〜１００％の範囲がより好ましい。前記基材の側面部および平面部に貼り合された化粧シートの伸び率としては、より一層優れた意匠性が得られる点から、３％未満であることが好ましい。なお、前記基材に貼り合わされた化粧シートの伸び率は、例えば、加工前の化粧シートに印を付けて、加工後の化粧シートの長さを測定することで算出することができる。 Moreover, in the decorative board of the present invention, it is essential that the decorative sheet bonded to the groove portion has an elongation of 5% or more, and the decorative sheet bonded to the side surface portion has an elongation of less than 5%. is there. Moreover, it is preferable that the elongation rate of the decorative sheet bonded to the flat portion is also less than 5%. In the present invention, since the vacuum laminating method is not used when manufacturing the decorative board, the decorative sheet in the side surface portion, and preferably the flat surface portion, does not extend to 5% or more. Thus, since the elongation rate of the base material side part and preferably the decorative sheet of the flat part is low, the design of the decorative sheet is not impaired, and a desired design can be easily applied even in the groove part. The elongation percentage of the decorative sheet bonded to the groove portion of the substrate is preferably in the range of 5 to 200%, more preferably in the range of 50 to 100%, from the viewpoint that the followability of the decorative sheet can be further improved. The elongation percentage of the decorative sheet bonded to the side surface portion and the flat surface portion of the base material is preferably less than 3% from the viewpoint that even more excellent design properties can be obtained. The elongation percentage of the decorative sheet bonded to the substrate can be calculated, for example, by marking the decorative sheet before processing and measuring the length of the decorative sheet after processing.
次に、本発明の化粧板の製造方法について説明する。 Next, the manufacturing method of the decorative board of this invention is demonstrated.
本発明の化粧板は、例えば、前記化粧シート上に接着剤を塗布して、化粧シートと前記した溝を有する基材平面、側面、及び場合により背面部とをラミネートし、その後、基材の溝部にあたる化粧シートを局部加熱し、化粧シートを局部的に軟化させ、基材の溝部に圧着させる方法が挙げられ、具体的には下記の工程（ｉ）〜（ｉｖ）が挙げられる。 The decorative board of the present invention, for example, by applying an adhesive on the decorative sheet, laminating the decorative sheet and the substrate plane having the groove, the side surface, and optionally the back surface, Examples include a method in which the decorative sheet corresponding to the groove is locally heated, the decorative sheet is locally softened, and pressure-bonded to the groove of the base material. Specifically, the following steps (i) to (iv) are exemplified.
（ｉ）接着剤塗布工程
まず、前記化粧シート上に接着剤を塗布する。前記接着剤を塗布する方法としては、例えば、アプリケーター、ロールコーター、スプレーコーター、Ｔ−タイコーター、ナイフコーター、コンマコーター等を使用する方法が挙げられる。
(I) Adhesive application process First, an adhesive is applied on the decorative sheet. Examples of the method for applying the adhesive include a method using an applicator, a roll coater, a spray coater, a T-tie coater, a knife coater, a comma coater, and the like.
前記接着剤は、前記化粧シートではなく、前記基材上に塗布してもよい。かかる場合には、前記基材の化粧シートを貼り合わせる部位、例えば、基材の平面部、溝部、側面部、及び場合により背面部に塗布することが挙げられる。また、前記基材の溝部が接着剤で埋まってしまう場合には、溝部においても平面部の接着剤層と同様の厚さとなるよう処理することが好ましい。 The adhesive may be applied on the substrate instead of the decorative sheet. In such a case, it may be applied to a part where the decorative sheet of the base material is bonded, for example, a flat surface portion, a groove portion, a side surface portion, and optionally a back surface portion of the base material. Moreover, when the groove part of the said base material is filled with an adhesive agent, it is preferable to process so that it may become the thickness similar to the adhesive bond layer of a plane part also in a groove part.
（ｉｉ）基材平面部のシート接着工程
前記接着剤を塗布した後には、化粧シートと前記基材の平面部とを貼り合わせる。この貼り合わせ工程では、前記化粧シートと前記基材の平面部とを加圧しながら貼り合わせることが、接着剤を固化して生産性を向上できる点で好ましい。
(Ii) Sheet adhesion step of base material flat part After applying the adhesive, the decorative sheet and the flat part of the base material are bonded together. In this bonding step, it is preferable to bond the decorative sheet and the flat portion of the base material while applying pressure in terms of solidifying the adhesive and improving productivity.
（ｉｉｉ）基材側面部のシート接着工程
次に、基材の平面部に接着された化粧シートの余剰部分を、折り曲げ治具等を使用して側面部、及び必要により背面部に合わせて折り曲げ、接着する。
(Iii) Substrate side surface sheet bonding step Next, the surplus portion of the decorative sheet bonded to the flat surface portion of the base material is bent using a bending jig or the like to the side surface portion and, if necessary, the back surface portion. Adhere.
（ｉｖ）基材溝部のシート接着工程
基材溝部への化粧シート接着方法としては、基材の平面部に接着された化粧シートにおいて基材の溝にあたる部分を局部加熱し、基材の溝部に圧着させる方法が挙げられる。具体的には、基材の平面部に接着された化粧シートにおいて基材の溝にあたる部分を、化粧シートが軟化する温度（例えば、４０〜２００℃）に加熱し軟化・伸長させながら、化粧シートを基材の溝部に追従するように、押し込み治具等を使用して基材の溝底面に押し付け、化粧シート裏面に塗布した接着剤を再溶融させるホットプレス工程を行い、その後、加熱されていない同形状の押し込み治具等で、溝部上の化粧シートを基材の溝底面に押し付け、接着剤を冷却固化させるコールドプレス工程を行う方法が挙げられる。以上の方法により基材の平面部、溝部、側面部、および必要により一部の背面部において化粧シートが連続して貼り合わされた化粧板を得ることができる。なお、前記化粧シートの局部加熱は、例えば、加熱した押し込み治具を使用する方法が挙げられる。
(Iv) Sheet Adhesion Step of Base Material Groove As a decorative sheet adhesion method to the base material groove, the portion corresponding to the groove of the base material is locally heated in the decorative sheet adhered to the flat surface of the base material, The method of making it crimp is mentioned. Specifically, in the decorative sheet bonded to the flat surface portion of the base material, the portion corresponding to the groove of the base material is heated to a temperature at which the decorative sheet softens (for example, 40 to 200 ° C.) to soften and extend the decorative sheet. Is pressed against the groove bottom surface of the base material using a pressing jig or the like so as to follow the groove portion of the base material, and a hot press process is performed in which the adhesive applied to the back surface of the decorative sheet is remelted and then heated. There is a method of performing a cold pressing process in which the decorative sheet on the groove is pressed against the groove bottom surface of the substrate with a pressing jig or the like having no shape, and the adhesive is cooled and solidified. By the above method, a decorative board can be obtained in which a decorative sheet is continuously bonded to the flat surface portion, the groove portion, the side surface portion, and if necessary, a part of the back surface portion. In addition, as for the local heating of the said decorative sheet, the method of using the heated pushing jig | tool is mentioned, for example.
以上、本発明の化粧板は、平面部に化粧シートが追従した溝を有するため、耐水性に優れるものである。また、基材平面部の化粧シートの伸び率を低く設定することができ、例えば、木目調の化粧シート等を使用した場合には、平面部では木目模様が広がらず、所望の意匠性を簡便に得ることができる。 As mentioned above, since the decorative board of this invention has the groove | channel which the decorative sheet followed in the plane part, it is excellent in water resistance. Further, the elongation rate of the decorative sheet on the flat surface of the base material can be set low. For example, when a decorative sheet having a wood grain tone is used, the wood pattern is not widened on the flat surface, and the desired design can be simplified. Can get to.
よって、本発明の化粧板は、床材；下足扉、クローゼット扉、キッチン扉等の扉；枠材、額縁、巾木等の造作材；カウンターテーブル、家具用天板等の天板などに好適に使用することができる。 Therefore, the decorative board of the present invention can be used for flooring materials; doors such as underfoot doors, closet doors and kitchen doors; construction materials such as frame materials, picture frames and baseboards; It can be preferably used.
以下、実施例により本発明をより詳細に説明する。 Hereinafter, the present invention will be described in more detail with reference to examples.
［実施例１］
まず、化粧シートとして、木目模様のある塩化ビニル系化粧シート（厚さ１３０μｍ、軟化点５０℃、以下「ＰＶＣ」と略記する。）、接着剤として湿気硬化型ウレタンホットメルト接着剤（ＤＩＣ株式会社製「タイフォースＦＨ−３１００」、以下「ＰＵＲ」と略記する。）、基材として、縦１８２０ｃｍ、幅３１ｃｍ、厚さ９ｍｍのＭＤＦであり、縦６０ｃｍ、幅１５ｃｍの長方形をなすような三角溝（溝の幅１ｍｍ、深さ０．８ｍｍ）を、長手方向に順次半分ずつずれるように連続して形成されたものを用意した。
Ｔダイコーターを使用して化粧シートの裏面全面に接着剤を６０μｍの厚さで塗布し、接着剤層を基材上に加圧しながら貼り合わせた。次いで、化粧シートの余剰部分を基材の四方側面部に折り曲げ、圧着させた。
続いて、基材の溝部にあたる化粧シートを、８０℃に加熱した押し込み治具を押し当て局部加熱し、軟化させながら伸長させ基材の溝底面に圧着させた。その後、加熱していない押し込み治具を押し当て冷却して圧着させることで、化粧板を得た。前記基材の溝部に貼り合わされた化粧シートの伸び率は１２０％であり、それ以外の部分の化粧シートの伸び率は１％であった。なお、表１において、本加工方法を「Ｎ１」と記載した。
[Example 1]
First, a vinyl chloride decorative sheet having a wood grain pattern (thickness 130 μm, softening point 50 ° C., hereinafter abbreviated as “PVC”) as a decorative sheet, and a moisture curable urethane hot melt adhesive (DIC Corporation). “Tyforce FH-3100” (hereinafter abbreviated as “PUR”), a MDF with a length of 1820 cm, a width of 31 cm, and a thickness of 9 mm as a base material, and a triangular groove that forms a rectangle with a length of 60 cm and a width of 15 cm (Groove width 1 mm, depth 0.8 mm) was prepared continuously so as to be shifted by half in the longitudinal direction.
An adhesive was applied to the entire back surface of the decorative sheet with a thickness of 60 μm using a T-die coater, and the adhesive layer was bonded onto the substrate while being pressed. Next, the surplus portion of the decorative sheet was bent and crimped to the four side surface portions of the base material.
Subsequently, the decorative sheet corresponding to the groove portion of the base material was pressed with a pressing jig heated to 80 ° C. and locally heated to be stretched while being softened, and was pressed onto the bottom surface of the groove of the base material. Then, the decorative board was obtained by pressing and cooling the pressing jig which is not heated, and making it crimp. The elongation percentage of the decorative sheet bonded to the groove portion of the base material was 120%, and the elongation percentage of the decorative sheet in other portions was 1%. In Table 1, this processing method is described as “N1”.
［実施例２］
化粧シートを、木目模様のあるポリオレフィン系化粧シート（厚さ１００μｍ、軟化点７０℃、以下「ＰＯＦ」と略記する。）に変更した以外は、実施例１と同様にして化粧板を得た。なお、表１において、本加工方法を「Ｎ２」と記載した。
[Example 2]
A decorative board was obtained in the same manner as in Example 1 except that the decorative sheet was changed to a wood-patterned polyolefin-based decorative sheet (thickness 100 μm, softening point 70 ° C., hereinafter abbreviated as “POF”). In Table 1, this processing method is described as “N2”.
［実施例３］
接着剤を、溶剤系ウレタン接着剤（ノーテープ工業株式会社製「Ｎｏ.５２５０」、以下「ＰｕＰＳＡ」と略記する。）に変更した以外は、実施例１と同様にして化粧板を得た。なお、表１において、本加工方法を「Ｎ３」と記載した。
[Example 3]
A decorative board was obtained in the same manner as in Example 1 except that the adhesive was changed to a solvent-based urethane adhesive (“No. 5250” manufactured by No Tape Industry Co., Ltd., hereinafter abbreviated as “PuPSA”). In Table 1, this processing method is described as “N3”.
［実施例４］
化粧シートをＰＯＦに、また、接着剤をＰｕＰＳＡに変更した以外は、実施例１と同様にして化粧板を得た。なお、表１において、本加工方法を「Ｎ４」と記載した。
[Example 4]
A decorative board was obtained in the same manner as in Example 1 except that the decorative sheet was changed to POF and the adhesive was changed to PuPSA. In Table 1, this processing method is described as “N4”.
［比較例１］
化粧シート、及び、接着剤は実施例１と同様のものを用意し、基材は、実施例１において溝の入っていない平坦なＭＤＦを用意した。
Ｔダイコーターを使用して化粧シートの裏面全面に接着剤を５５μｍの厚さで塗布し、接着剤層を基材上に加圧しながら貼り合わせた。次いで、化粧シートの余剰部分を基材の四方側面部に折り曲げ、圧着させた。
次いで、ルーターを用いて、幅１ｍｍ、深さ０．８ｍｍの溝を形成し、基材平面部の化粧シートの伸び率が０％、溝部には化粧シートのない化粧板を得た。以下、この加工方法を「フラットラミネーション＋溝加工」と略記する。
[Comparative Example 1]
A decorative sheet and an adhesive similar to those in Example 1 were prepared, and a flat MDF having no grooves in Example 1 was prepared as the base material.
An adhesive was applied to the entire back surface of the decorative sheet with a thickness of 55 μm using a T-die coater, and the adhesive layer was bonded onto the substrate while being pressed. Next, the surplus portion of the decorative sheet was bent and crimped to the four side surface portions of the base material.
Next, using a router, a groove having a width of 1 mm and a depth of 0.8 mm was formed, and a decorative sheet without a decorative sheet in the groove portion was obtained. Hereinafter, this processing method is abbreviated as “flat lamination + groove processing”.
［比較例２］
化粧シート、接着剤、及び、基材は実施例１と同様のものを用意した。
Ｔダイコーターを使用して化粧シートの裏面全面に接着剤を５５μｍの厚さで塗布し、接着剤層を基材上に加圧しながら貼り合わせた。次いで、化粧シートの余剰部分を基材の四方側面部に折り曲げ、圧着させた。
次いで、この化粧板を、真空ラミネーター（株式会社エヌ・ピー・シー製「ＬＭ−５０Ｘ５０−Ｓ」）を使用して、１２０℃／０．１ＭＰａ／２分、１５ｍｂａｒの条件で真空ラミネートし、基材平面部の化粧シートの伸び率が６％、溝部における化粧シートの伸び率が１２０％の化粧板を得た。以下、この加工方法を「真空ラミネーション加工」と略記する。
[Comparative Example 2]
The decorative sheet, adhesive, and base material were the same as those in Example 1.
An adhesive was applied to the entire back surface of the decorative sheet with a thickness of 55 μm using a T-die coater, and the adhesive layer was bonded onto the substrate while being pressed. Next, the surplus portion of the decorative sheet was bent and crimped to the four side surface portions of the base material.
Next, this decorative board was vacuum laminated using a vacuum laminator (“LM-50X50-S” manufactured by NPC Corporation) under the conditions of 120 ° C./0.1 MPa / 2 minutes and 15 mbar. A decorative sheet was obtained in which the elongation percentage of the decorative sheet in the flat portion of the material was 6% and the elongation percentage of the decorative sheet in the groove portion was 120%. Hereinafter, this processing method is abbreviated as “vacuum lamination processing”.
［耐水性の評価方法］
実施例および比較例で得られた化粧板を、溝を含む７５ｍｍ角にカットし、小口をアルミテープと２液型エポキシ接着剤でシールした。これを１００℃の温水に４時間浸漬→６０℃で２０時間乾燥→１００℃の温水に４時間浸漬→６０℃で３時間乾燥を１サイクルとして、これを５サイクル実施した後、化粧シートの剥がれの有無を目視観察し、化粧シートの剥がれがないものを「○」、剥がれがあるものを「×」と評価した。
[Evaluation method of water resistance]
The decorative boards obtained in Examples and Comparative Examples were cut into 75 mm squares including grooves, and the fore edge was sealed with aluminum tape and a two-component epoxy adhesive. This was immersed in 100 ° C warm water for 4 hours → dried at 60 ° C for 20 hours → immersed in 100 ° C warm water for 4 hours → dried at 60 ° C for 3 hours. After 5 cycles of this, the decorative sheet peeled off The presence or absence of the film was visually observed, and the case where the decorative sheet was not peeled was evaluated as “◯”, and the case where the decorative sheet was peeled was evaluated as “x”.
［意匠性の評価方法］
意匠性の評価は、木目模様の変化によって評価した。
（木目模様の変化の評価）
実施例および比較例で得られた化粧板の平面部の木目模様を目視観察し、以下のように評価した。
「○」：木目模様の変化が気にならない。
「×」：木目模様の変化が一見して確認される。
[Design evaluation method]
The design property was evaluated by the change in the grain pattern.
(Evaluation of change in grain pattern)
The wood grain pattern of the flat portion of the decorative board obtained in Examples and Comparative Examples was visually observed and evaluated as follows.
“○”: I do not mind the change in the wood grain pattern.
“×”: The change in the grain pattern is confirmed at a glance.
本発明の化粧板は、溝部に化粧シートが追従しており、耐水性に優れることが分かった。また、木目調の化粧シートの意匠性を化粧板平面部において損なうものでなかった。 In the decorative board of the present invention, it was found that the decorative sheet follows the groove and is excellent in water resistance. Further, the design of the wood-tone decorative sheet was not impaired in the flat portion of the decorative plate.
一方、比較例１は、フラットラミネーション＋溝加工による加工方法であるが、溝部において基材が露出するため、耐水性が不良であった。 On the other hand, Comparative Example 1 is a processing method by flat lamination + groove processing, but the base material was exposed in the groove portion, so that the water resistance was poor.
比較例２は、真空ラミネーション加工による加工方法であるが、真空引きにより木目調の化粧シートが伸び、意匠性を損なうものであった。 Comparative Example 2 is a processing method by vacuum lamination processing, but the wood-tone decorative sheet is stretched by vacuum drawing and the design properties are impaired.
Claims (2)
前記基材が、その平面部に、長手方向および長手方向以外の少なくとも１方向に溝を有するものであり、
基材の側面部、平面部および平面部に設けられた溝部において化粧シートが連続して貼り合わされており、
前記平面部に設けられた溝部に貼り合された化粧シートの伸び率が５％以上であり、かつ、側面部の化粧シートの伸び率が５％未満であることを特徴とする化粧板。 A decorative plate on which a base material and a decorative sheet are bonded,
The base material has a groove in at least one direction other than the longitudinal direction and the longitudinal direction in the plane portion,
The decorative sheet is continuously pasted in the groove provided in the side part, the flat part and the flat part of the base material,
A decorative board characterized in that the decorative sheet bonded to the groove provided in the flat portion has an elongation percentage of 5% or more, and the decorative sheet on the side surface has an elongation ratio of less than 5%.
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| JP2018092982A JP2019198972A (en) | 2018-05-14 | 2018-05-14 | Decorative sheet |
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| JP2018092982A JP2019198972A (en) | 2018-05-14 | 2018-05-14 | Decorative sheet |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57100065A (en) * | 1980-12-15 | 1982-06-22 | Naito Sumio | Manufacture of grooved decorative board |
| JP2003206617A (en) * | 2002-01-11 | 2003-07-25 | Dainippon Printing Co Ltd | Decorative materials |
| JP2003311819A (en) * | 2002-04-19 | 2003-11-06 | Araco Corp | Manufacturing method for laminated molded object, interior finish member and furniture comprising laminated molded object |
| JP2008279717A (en) * | 2007-05-14 | 2008-11-20 | Panasonic Electric Works Co Ltd | Manufacturing method for decorative panel |
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2018
- 2018-05-14 JP JP2018092982A patent/JP2019198972A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57100065A (en) * | 1980-12-15 | 1982-06-22 | Naito Sumio | Manufacture of grooved decorative board |
| JP2003206617A (en) * | 2002-01-11 | 2003-07-25 | Dainippon Printing Co Ltd | Decorative materials |
| JP2003311819A (en) * | 2002-04-19 | 2003-11-06 | Araco Corp | Manufacturing method for laminated molded object, interior finish member and furniture comprising laminated molded object |
| JP2008279717A (en) * | 2007-05-14 | 2008-11-20 | Panasonic Electric Works Co Ltd | Manufacturing method for decorative panel |
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